I have a class set up as follows:
public class Foo
{
public string string1 { get; set; }
public string string2 { get; set; }
public string string3
You can use MissingMemberHandling property of the JsonSerializerSettings object.
Example usage:
var jsonSerializerSettings = new JsonSerializerSettings();
jsonSerializerSettings.MissingMemberHandling = MissingMemberHandling.Ignore;
JsonConvert.DeserializeObject(jsonResponse, jsonSerializerSettings);
More info here.